Fosteum is a prescription medical food primarily prescribed forpost-menopausalwomen who have experienced bone loss through osteopenia and osteoporosis. Osteopeniaandosteoporosisare conditions where bone density is lost over time and is more common in older adults. In osteoporosis, there are no symptoms, but bone loss is occuring. If the condition progresses then you may experience the following symptoms: loss of height, back pain, stooped posture, and easily fractured bones. Fosteum contains the active ingredientGenistein, which works by decreasing how much the bones are recycled by different types of bone tissue. Over time, the amount of minerals like calcium increase in your bones, potentially lowering the risk of fracture.